March 2009 - MacRuby-devel - lists.macosforge.org

[MacRuby] #234: Backticks segfaults occasionally
by MacRuby 26 Aug '09

26 Aug '09

#234: Backticks segfaults occasionally --------------------------------+------------------------------------------- Reporter: brad@… | Owner: lsansonetti@… Type: defect | Status: new Priority: blocker | Milestone: Component: MacRuby | Keywords: --------------------------------+------------------------------------------- Hi, I have a script that is running an external command using backticks `` every 5 seconds or so. It seems to work for a few hours, then segfault. The error report is below. From what I can tell, the string passed into the backticks is not null - i can print it out using NSLog just fine. I haven't been able to provide a quick way to replicate this problem - it seems to take time. This is on the latest svn of MacRuby. {{{ /Users/brad/projects/gately/Gately.app/Contents/Resources/lib/panel.rb:65: [BUG] Segmentation fault MacRuby version 0.4 (ruby 1.9.1) [universal-darwin9.0, x86_64] -- stack frame ------------ 0000 (0xc083a0060): 00000004 0001 (0xc083a0068): 00000000 0002 (0xc083a0070): 00000004 0003 (0xc083a0078): 80035dae8 0004 (0xc083a0080): 00000004 0005 (0xc083a0088): 8006843e0 0006 (0xc083a0090): 00000004 0007 (0xc083a0098): 00000000 0008 (0xc083a00a0): 8000d1ac0 0009 (0xc083a00a8): 00000004 0010 (0xc083a00b0): c0849fec8 0011 (0xc083a00b8): 8000d24a0 0012 (0xc083a00c0): 00000004 0013 (0xc083a00c8): c083a0098 (= 7) 0014 (0xc083a00d0): 8006843e0 0015 (0xc083a00d8): 00000004 0016 (0xc083a00e0): 80067d6c0 0017 (0xc083a00e8): 00000004 0018 (0xc083a00f0): 00000000 <- lfp <- dfp -- control frame ---------- c:0008 p:---- s:0019 b:0019 l:000018 d:000018 CFUNC :` c:0007 p:0036 s:0015 b:0014 l:000007 d:000013 BLOCK /Users/brad/projects/gately/Gately.app/Contents/Resources/lib/panel.rb:65 c:0006 p:---- s:0013 b:0013 l:000012 d:000012 FINISH :nil? c:0005 p:---- s:0011 b:0011 l:000010 d:000010 CFUNC :each c:0004 p:0012 s:0008 b:0008 l:000007 d:000007 METHOD /Users/brad/projects/gately/Gately.app/Contents/Resources/lib/panel.rb:63 c:0003 p:0011 s:0004 b:0004 l:001e88 d:000003 BLOCK /Users/brad/projects/gately/Gately.app/Contents/Resources/lib/panel.rb:47 c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH c:0001 p:---- s:0002 b:0002 l:000001 d:000001 TOP --------------------------- }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/234> MacRuby <http://macruby.org/>

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[MacRuby] #185: Redefining singleton methods on multiple objects at the same place
by MacRuby 26 Aug '09

26 Aug '09

#185: Redefining singleton methods on multiple objects at the same place ----------------------------------------+----------------------------------- Reporter: vincent.isambart@… | Owner: lsansonetti@… Type: defect | Status: new Priority: major | Milestone: Component: MacRuby | Keywords: ----------------------------------------+----------------------------------- The following code causes a warning. The problem is when 2 different objects have a method defined on their singleton class at the same place. {{{ def func(obj) def obj.a p self.description p self.class.ancestors super end end class A def a end end o1 = A.new o2 = A.new func(o1) func(o2) puts 'o1' o1.a puts 'o2' o2.a }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/185> MacRuby <http://macruby.org/>

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[MacRuby] #169: [HotCocoa] status_item mapping doesn't appear to work
by MacRuby 25 Aug '09

25 Aug '09

#169: [HotCocoa] status_item mapping doesn't appear to work --------------------------------+------------------------------------------- Reporter: chris@… | Owner: lsansonetti@… Type: defect | Status: new Priority: minor | Milestone: Component: MacRuby | Keywords: --------------------------------+------------------------------------------- I'm porting a little single file rubycocoa app to check out hotcocoa but ran into a little problem with the code below: {{{ require 'hotcocoa' class Application include HotCocoa def start application :name => "MacMenu" do |app| app.delegate = self @item = status_item #@item = status_bar.statusItemWithLength NSVariableStatusItemLength @item.title = "MacMenu" end end end Application.new.start }}} The @item = status_item call causes the following error: {{{ /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.0/hotcocoa/mappings/status_item.rb:6:in `alloc_with_options': undefined local variable or method `status_bar' for #<HotCocoa::Mappings::Mapper:0x80039e6e0> (NameError) from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.0/hotcocoa/mapper.rb:48:in `block in map_method' from hotcocoa_menu_test.rb:9:in `block in start' from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.0/hotcocoa/mappings/application.rb:9:in `call' from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.0/hotcocoa/mappings/application.rb:9:in `handle_block' from /Library/Frameworks/MacRuby.framework/Versions/0.4/usr/lib/ruby/1.9.0/hotcocoa/mapper.rb:67:in `block in map_method' from hotcocoa_menu_test.rb:7:in `start' from hotcocoa_menu_test.rb:16:in `<main>' }}} Using the commented out line instead everything is fine. -- Ticket URL: <http://www.macruby.org/trac/ticket/169> MacRuby <http://macruby.org/>

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[MacRuby] #225: regexp engine broken when a string contains non ascii characters
by MacRuby 19 May '09

19 May '09

#225: regexp engine broken when a string contains non ascii characters -------------------------------------+-------------------------------------- Reporter: mattaimonetti@… | Owner: lsansonetti@… Type: defect | Status: new Priority: critical | Milestone: MacRuby 0.4 Component: MacRuby | Keywords: regexp, bug -------------------------------------+-------------------------------------- Here is a sample code to reproduce the problem: {{{ html = %{<a href="http://www.flickr.com/people/jeanelietrujillo/">jeanelietrujillo</a> posted a photo: <a href="http://www.flickr.com/photos/jeanelietrujillo/2211862262/" title="Galgani Décoration"><img src="http://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg" width="240" height="240" alt="Galgani Décoration" /></a>} html.scan(/<img\s+src="(.+?)"/)[0][0] }}} ruby 1.9 returns: {{{ => "http://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg" }}} macruby returns: {{{ => "ttp://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg\"" }}} Now let's try to remove the é and replace it by a e: {{{ html = %{<a href="http://www.flickr.com/people/jeanelietrujillo/">jeanelietrujillo</a> posted a photo: <a href="http://www.flickr.com/photos/jeanelietrujillo/2211862262/" title="Galgani Decoration"><img src="http://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg" width="240" height="240" alt="Galgani Décoration" /></a>} html.scan(/<img\s+src="(.+?)"/)[0][0] }}} MacRuby now returns: {{{ => "http://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg" }}} My guess is that the unicode characters mess up the the count to extract the matched string resulting in a substring starting one character too early. To prove my hypothesis here is another sample, this time with 2 "é" characters: {{{ html = %{<a href="http://www.flickr.com/people/jeanelietrujillo/">jeanelietrujillo</a>a posté une photo: <a href="http://www.flickr.com/photos/jeanelietrujillo/2211862262/" title="Galgani Décoration"><img src="http://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg" width="240" height="240" alt="Galgani Décoration" /></a>} html.scan(/<img\s+src="(.+?)"/)[0][0] }}} MacRuby returns: {{{ => "tp://farm3.static.flickr.com/2262/2211862262_2f08c343a3_m.jpg\" " }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/225> MacRuby <http://macruby.org/>

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[MacRuby] #241: NSMutableSet#merge fails
by MacRuby 08 Apr '09

08 Apr '09

#241: NSMutableSet#merge fails ------------------------------+--------------------------------------------- Reporter: kourge@… | Owner: lsansonetti@… Type: defect | Status: new Priority: major | Milestone: MacRuby 0.4 Component: MacRuby | Keywords: ------------------------------+--------------------------------------------- NSMutableSet#merge succeeds if called with another NSMutableSet, but it fails when passed an Enumerable, such as NSMutableArray. {{{ ~ kourge$ irb >> s = Set[1, 2] NameError: uninitialized constant Set from (irb):1 >> require 'set' => true >> s = Set[1, 2] => #<Set: {1, 2}> >> s.merge [3, 4] => #<Set: {1, 2, 3, 4}> >> quit ~ kourge$ macirb >> s = Set[1, 2] => #<NSMutableSet:0x800754380> >> s.merge [3, 4] 2009-03-30 23:54:03.319 macruby[233:10b] *** -[NSCFArray _applyValues:context:]: unrecognized selector sent to instance 0x80047cd80 2009-03-30 23:54:03.365 macruby[233:10b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSCFArray _applyValues:context:]: unrecognized selector sent to instance 0x80047cd80' 2009-03-30 23:54:03.366 macruby[233:10b] Stack: ( 140735351352508, 140735358957775, 140735351379451, 140735351372932, 140735351373272, 4295759037, 4296060391, 4296017807, 4296038178, 4296040810, 4296042845, 4296060391, 4296017807, 4296038178, 4296074114, 4295152255, 4295972133, 4296060391, 4296017807, 4296038178, 4296066197, 4296060391, 4296017807, 4296038178, 4296066197, 4296060391, 4296017807, 4296038178, 4296038828, 4295151426, 4295164679, 4294971167, 4294971044 ) terminate called after throwing an instance of 'NSException' Abort trap ~ kourge$ }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/241> MacRuby <http://macruby.org/>

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Accessing Obj-C InstVars from Ruby
by Edward Hynes 05 Apr '09

05 Apr '09

Is there a way to access instance variables defined in an Objective-C class from a Ruby extension? I'm porting some of Apple's example code to MacRuby as a learning experience and would like to do so incrementally. Porting the code one class at a time works fine, but for some of the larger classes I'd like to port them a few methods at a time. Here's an example of what's happening --- Example.h --- @interface Example : NSObject { NSString *instVarA; NSString *instVarB; } - (NSString *)methodA; @end --- Example.m --- #import "Example.h" @implementation Example - (id)init { if (self = [super init]) { instVarA = @"instVarA"; instVarB = @"instVarB"; } return self; } - (NSString *)methodA { return instVarA; } @end --- Example.rb --- class Example def methodB @instVarB end end Then at runtime, when I execute the following... example = Example.alloc.init puts example.methodA.inspect puts example.methodB.inspect .. I get "instVarA" nil How do I access InsVarB from Ruby? Thanks, Ed

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Macruby.framwork into Bundle
by Markus Werner 03 Apr '09

03 Apr '09

Hello List, I used the tutorial and tried to put the Macruby.framework into my Bundle. The executable already contains the right "path" to the framework and I copied the Run Script from "Embeded Mac Ruby Target" to my regular target, so the framework is in the bundle. (Why is this an extra target at all ? No criticism, just curiosity :-) ) If I do this thing with a virgin application, the application starts on a mac without macruby installed, but if I use my learnig project "http://github.com/polarix/iterm-auto-bookmark/tree/master ", the applications starts and quit immediately, without any error. BTW If somthing went wrong, on a call to a method (ruby or object-c object) you alway get a "NoMethodError" even if the method exists. The same thing applies to RubyCocoa. See http://discussions.apple.com/thread.jspa? threadID=1957372&tstart=60 if you like. :-D with kind regards Markus

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# of developers
by Joel Reymont 01 Apr '09

01 Apr '09

How many people are actively developing MacRuby apart from Laurent? Thanks, Joel --- http://tinyco.de Mac, Lisp, OCaml

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Accessing bytes within NSData
by Pete Yandell 01 Apr '09

01 Apr '09

I'd like to use something like Ruby's String#unpack to pull some info out of an NSData, but I'm stumped as to how to do it. NSData.bytes returns a Pointer object, but trying to use [] to dereference it gives me: ArgumentError: can't convert C/Objective-C value `0x800059800' of type `?_?' to Ruby object I've done a lot of digging around, reading of forum posts, playing (unsuccessfully) with BridgeSupport, etc., but it hasn't got me any closer. Any hints? The broader context is that I'm trying to extract the TCP port number from an NSSocketPort. NSSocketPort's address method returns an NSData, which should contain a sockaddr_in, out of which I should be able to pull the port. Thanks, Pete Yandell http://notahat.com/

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[hotcocoa] http wrapper, what do you think?
by Matt Aimonetti 31 Mar '09

31 Mar '09

In my free time, I've been working on a http://lighthouseapp.com client app which mixes API calls with webkit views (I'll release the source code later on). The app is 100% HotCocoa (meaning that I didn't use any nib/xibs). For people who are not used to work with delegation, having to deal with file download, URL queries can be a bit challenging if you want to start using the underlying obj-c methods. That's why I wrote a small HTTP wrapper to clean up my code and make download/queries easier. The library is divided in 2 major parts, a helper and the Query/Response classes. Here is how the helper looks like so far: Download helper making file download trivial Pass an url, and a block or a delegator A block takes precedence over a delegator, meaning that you can't pass a delegator and use a block, you have to choose which approach to pick. ==== Parameters url<String>:: url of the resource to download options<Hash>:: optional options used for the query &block<block>:: block which is called when the file is downloaded ==== Options :method<String, Symbol>:: An optional value which represents the HTTP method to use :payload<String>:: - data to pass to a POST, PUT, DELETE query. :delegation<Object>:: - class or instance to call when the file is downloaded. the handle_query_response method will be called on the passed object :save_to<String>:: - path to save the response to :credential<Hash>:: - should contains the :user key and :password key By default the credential will be saved for the entire session TODO :progress <Proc>:: Proc to call everytime the downloader makes some progress :cache_storage :custom headers Error handling ==== Examples download("http://www.macruby.org/files/MacRuby%200.4.zip", {:save_to => '~/tmp/macruby.zip'.stringByStandardizingPath}) do |macruby| NSLog("file downloaded!") end download "http://macruby.org" do |mr| # The response object has 3 accessors: status_code, headers and body NSLog("status: #{mr.status_code}, Headers: #{mr.headers.inspect}") end path = File.expand_path('~/macruby_tmp.html') window :frame => [100, 100, 500, 500], :title => "HotCocoa" do |win| download("http://macruby.org", {:save_to => path}) do |homepage| win << label(:text => "status code: #{homepage.status_code}", :layout => {:start => false}) win << label(:text => "Headers: #{homepage.headers.inspect}", :layout => {:start => false}) end end download "http://macruby.org/users/matt", :delegation => @downloaded_file, :method => 'PUT', :payload => {:name => 'matt aimonetti'} download "http://macruby.org/roadmap.xml", :delegation => self download "http://localhost:5984/couchrest-test/", :method => 'POST', :payload => '{"user":"mattaimonetti(a)gmail.com","zip":92129}', :delegation => self download("http://mysite.com/login", {:credential => {:user => 'me', :password => 's3krit'}}) do |test| NSLog("response received: #{test.headers} #{test.status_code}") end As you can see from the example list, the method name download isn't always appropriate and maybe I should give it the http_query alias. What do you think? What's nice with this approach, is that on top of being simple, the query and the response handling are async so the rest of your code can be run and you get notified only when the response comes back. The underlying API looks like that: MacRubyHTTP::Query.new( url, http_method='GET', options={} ) Queries don't run in a custom runloop yet but that's something I want to look at once IO work on the experimental branch will be done. So, here is my question, do you guys think that this is something that should be part of HotCocoa or it's better if it stays its own separate lib? Also, what do you think about having a default vendor folder for hotcocoa apps and autoload the vendor files if available? - Matt

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